A QSL card is a written confirmation of either a two-way radio communication between two amateur radio or citizens band stations; a one-way reception of a signal from an AM radio, FM radio, television or shortwave broadcasting station; or the reception of a two-way radio communication by a third party listener. A typical QSL card is the same size and made from the same material as a typical postcard, and most are sent through the mail or email PDF as such.

QSL CARD RECEIVED BY FORT WARD AMATEUR RADIO CLUB

SAMPLE QSL CARD FOR DECEMBER 7, 1941 RADIO CALL